PBDE, or polybrominated diphenyl ethers, is an industrial toxic chemical used as a flame retardant in plastics, furniture and mattresses. In April, the state Legislature passed a measure that prohibits the manufacture, sale or distribution of most items containing PBDEs, which goes into effect for mattresses after Jan. 1, 2008. The chemical would be banned in upholstered furniture and in televisions and computers after Jan. 1, 2011.